References
NHS (2011) How much salt do babies and children need? http://www.nhs.uk/chq/Pages/824.aspx?CategoryID=51
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Norris JM, Barriga K, Hoffenberg EJ et al. (2005) Risk of celiac disease autoimmunity and timing of gluten introduction in the diet of infants at increased risk of disease. JAMA 293, 2343-2351.
Nwaru BI, Erkkola M, Ahonen S et al. (2010) Age at the introduction of solid foods during the first year and allergic sensitization at age 5 years. Pediatrics 125, 50-59.